All of our cufflinks and jewellery we handmake in our Wiltshire UK workshop. We have a dedicated small family team.Add some special style to your shirts.These cufflinks we have made from real brass Winchester .38 special nickel bullet cases and stamped 'Winchester 38 SPL'.HISTORY:The .38 Special was the standard service cartridge of most police departments in the United States from the 1920s to the 1990s, and was also a common sidearm cartridge used by soldiers in World War I. Your cufflinks will come to you in an ammunition style gift box ready to present with a picture sleeve.Bullet (cufflink) diameter: 10mm